Bulletstorm
60 Achievements
1,250
40-50h
Disco Inferno
Kill all enemies without leaving the dance floor in the city outskirts
10
How to unlock the Disco Inferno achievement in Bulletstorm - Definitive Guide
Once you reach the dance club you can chug two bottles of booze and hop the table to goto the dance floor. A boss and a handful of goons will appear. Slaughter them all and pick up the mini gun and gun down Everyone who comes in the window. After the first 3 in the door the game score will be awarded if you never step off the platform. This also works in echo mode where you run through the club.
Act 2 Chapter 1
Inside the bar area there is a stage where you will fight a mini-boss. Afterward, you will fight more enemies (roughly 5 or so). Do not leave the stage. Stay there and fight them off. If you go too far down the steps you will have to reload your checkpoint. If the big door opens and you did not get the achievement, just reload. It's easiest to stick behind the glowing cylinder sign and use your leash to electrocute the enemies.
Also note: This achievement can be revisited from chapter select, or earned in the echo mission "The Club". By loading "The Club" echo, you can get to this achievement opportunity within 30 seconds.
This is obtained in Act 2 - Chapter 1 inside the club where you will have to fight a miniboss on the dance floor. Kill him and pick up his big machine gun that he drops and stay on the dance floor without stepping off it. Many enemies will spawn down below the dance floor so kill all of them and the trophy will be yours as long as you hang back. You can also Leash enemies up towards you without risking your trophy unlocking. Here's a video for a demonstration:
Credit goes to RoosterTeeth